<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title></title>
</head>
<body>

<script type="text/javascript">
	document.write(123);
	document.write('你好js');
	console.log('你好');
</script>

<script type="text/javascript" src="js/index1.js"></script>

<script type="text/javascript"   defer src="js/a.js"></script>
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<script type="text/javascript">
	var str='你好js';
	console.log(str);

	var zhangSan='你好，张三';
	console.log(zhangSan);
</script>
</body>
</html>